MAIN_STYLE_SHEET = """
QWidget {
    background: #f5f6fa;
    font-family: 'Segoe UI', 'Microsoft YaHei', Arial, sans-serif;
    font-size: 15px;
}
QFrame#Card {
    background: white;
    border-radius: 18px;
    border: 1px solid #e0e0e0;
    padding: 18px;
}
QLabel {
    color: #222;
}
QPushButton {
    background: #4f8cff;
    color: white;
    border: none;
    border-radius: 8px;
    padding: 10px 22px;
    font-size: 15px;
}
QPushButton:hover {
    background: #357ae8;
}
QLineEdit, QTextEdit {
    background: #f8fafc;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 8px;
}
QTextEdit {
    min-height: 180px;
}
QLineEdit {
    min-height: 38px;
    font-size: 16px;
}
QScrollBar:vertical {
    width: 8px;
    background: #f5f6fa;
    border-radius: 4px;
}
QScrollBar::handle:vertical {
    background: #d0d7e5;
    border-radius: 4px;
}
""" 